Larvicidal activity of some Euphorbiaceae plant extracts against Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae). Parasitol Res
Unit of Bioactive Natural Products, Department of Zoology, C. Abdul Hakeem College, Melvisharam 632 509, India.Parasitology Research (Impact Factor: 2.1). 05/2008; 102(5):867-73. DOI: 10.1007/s00436-007-0839-6
Larvicidal activity of ethyl acetate, butanol, and petroleum ether extracts of five species of Euphorbiaceae plants, Jatropha curcas, Pedilanthus tithymaloides, Phyllanthus amarus, Euphorbia hirta, and Euphorbia tirucalli, were tested against the early fourth instar larvae of Aedes aegypti L. and Culex quinquefasciatus (Say). The larval mortality was observed after 24 h of exposure. All extracts showed low larvicidal effects; however, the highest larval mortality was found in petroleum ether extract. The LC50 value of petroleum ether extracts of J. curcas, P. tithymaloides, P. amarus, E. hirta, and E. tirucalli were 8.79, 55.26, 90.92, 272.36, and 4.25 ppm, respectively, against A. aegypti and 11.34, 76.61, 113.40, 424.94, and 5.52 ppm, respectively, against C quinquefasciatus. Of the various ratios tested, the petroleum ether extracts of J. curcas and E. tirucalli were observed to be more efficient than the other plant extracts. It is, therefore, suggested that E. tirucalli can be applied as an ideal potential larvicide against A. aegypti and C. quinquefasciatus. This is an ideal ecofriendly approach for the control of the dengue vector, A. aegypti, and the lymphatic filariasis vector, C. quinquefasciatus.
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- "% against Culex quinquefasciatus. The extracts of J. curcas and Euphorbia tirucalli were observed to be effective against the larvae of A. aegypti with LC 50 of 8.79 and 4.25 ppm, respectively (Rahuman et al. 2008). Sakthivadivel and Daniel (2008) also confirmed the toxicity of petroleum ether extract of J. curcas leaf and recorded the LC 50 value of less than 100 ppm against the larvae of C. quinquefasciatus, A. stephensi and A. aegypti. "
ABSTRACT: The hexane and ether extracts of leaves, bark and roots of Jatropha curcas were screened for their toxicity against different developmental stages of housefly. The larvicidal, pupicidal and adulticidal activities were analysed at various concentrations (0.78-7.86 mg/cm(2)) of hexane and ether extracts. The lethal concentration values (LC50) of hexane extract of J. curcas leaves were 3.0 and 0.27 mg/cm(2) for adult and larval stages of housefly, respectively, after 48 h. Similarly, the ether extract of leaf showed the LC50 of 2.20 and 4.53 mg/cm(2) for adult and larval stages of housefly. Least toxicity was observed with hexane root extract of J. curcas with LC50 values of 14.18 and 14.26 mg/cm(2) for adult and larvae of housefly, respectively, after 48 h. The variation in LC50 against housefly pupae was found to be 8.88-13.10 mg/cm(2) at various J. curcas extract concentrations. The GC-MS analysis of J. curcas leaf extract revealed the presence of trans-phytol (60.81 %), squalene (28.58 %), phytol (2.52 %) and nonadecanone (1.06 %) as major components that could be attributed for insecticidal activity of J. curcas extracts.Environmental Science and Pollution Research 05/2015; DOI:10.1007/s11356-015-4686-1 · 2.83 Impact Factor
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- "Jatropha curcas, Pedilanthus tithymaloides, Phyllanthus amarus, Euphorbia hirta, and Euphorbia tirucalli, were tested against C. quinquefasciatus. Petroleum ether extracts showed highest larvicidal effects, with LC 50 values of 11.34, 76.61, 113.40, 424.94, and 5.52 mg/l respectively (Rahuman et al., 2008). So these types of extracts were more toxic than aqueous extracts of castor. "
ABSTRACT: This study was conducted to evaluate, the phytochemical composition of leaves and roots of five Tunisian populations of castor (Ricinus communis L.). Levels of total phenolic contents, total flavonoids, and condensed tannins of methanolic extracts were determined by UV-spectrophotometer. Phenolic compounds were identified and quantified by RP-HPLC (reverse phase HPLC). Gentisic acid, catechin, rutin, vanillic acid, vitexin, and gallic acid were detected. GC–MS analysis that uses the FAME (fatty acid methyl ester) method in castor oils revealed the existence of palmitic, stearic, oleic, gondoic, linoleic, and ricinoleic acids. The antioxidant properties of leaves, roots, and oils of castor using the DPPH radical scavenging capacity assays. The study showed a high antioxidant capacity which was expressed by a very low IC50 values for the leaves extracts: Hammamet (0.65 μg/ml), Aouled Amer (2.42 μg/ml), Riadh Andalous (2.34 μg/ml), Nefza (3.91 μg/ml), and Khanguet Hajej (2.39 μg/ml). Besides, we investigated the larvicidal activity of aqueous extracts of leaves and seeds against Culex pipiens L. larvae. Toxicity tests showed a mortality of 100% after 24 h of exposure. The LC50 values for the seed extracts were low: Aouled Amer (570 mg/l), Nefza (603 mg/l), Khanguet Hajej (1260 mg/l), Riadh Andalous (1225 mg/l), and Hammamet (2140 mg/l). This study permits to exhibit two positive correlation relationships: the first one between the total phenolic compounds, total flavonoid compounds, and the antioxidant activities of leaves and roots extracts, and the second one between the antioxidant activity and the larvicidal activity of the leaves extracts.Industrial Crops and Products 05/2014; 56:43–51. DOI:10.1016/j.indcrop.2014.02.036 · 2.84 Impact Factor
- "Furthermore, the chemical structure of plant-derived insecticide molecules can also be exploited for the synthesis of analogous new molecules, such as the pyrethroids which were derived from natural pyrethrins (Casida 1980) and the nicotinoids and neonicotinoids from nicotine (Tomizawa et al 2000). The castor bean Ricinus communis (Euphorbiaceae) has shown a great potential as a source of insecticidal molecules against several insects (Roark 1947, Upasani et al 2003, Rahuman et al 2008, Elimam et al 2009; Rossi et al 2010, Zahir et al 2011), including species of Spodoptera (Ramos-López et al 2010, 2012). Therefore, we aimed to verify the effects of an aqueous extract of leaves of castor bean by evaluating the food utilization (nutritional indices), larval development, and survival of S. frugiperda fed on different concentrations of the tested extract. "
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